Long-term success depends on multiple factors.
Firstly, success will depend on the quality and quantity of bone.
The better the bone and the more available, the greater the chance of long-term success.
Secondly, the experience and ability of the dental surgeon will be a factor.
As with any surgical procedure, there is no substitute for the experience and individual talent of the dentist.
And finally, the quality of the restoration placed on top of the implant will play a big role in long-term success. If the design of the implant crowns or overdentures are poorly constructed, and biting forces are not balanced, even the best-placed dental implant will have a compromised survival rate.